Home / 21,177.06-31,780.80-17,066.70

Finding the Fourth Proportional to 21,177.06, 31,780.80 and 17,066.70

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Solution

The fourth proportional to 21,177.06, 31,780.80 and 17,066.70 is: 25,612.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.06 : 31,780.80 = 17,066.70 : x
  2. Step 2: Convert to fraction form
    21,177.06/31,780.80 = 17,066.70/x
  3. Step 3: Cross multiply
    21,177.06x = 31,780.80 × 17,066.70
  4. Step 4: Simplify right side
    21,177.06x = 542,393,379.36
  5. Step 5: Solve for x
    x = 542,393,379.36/21,177.06
  6. Step 6: Final answer
    x = 25,612.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.